﻿CREATE PROCEDURE [dbo].[P_BM_GenericPage]

@TableName varchar(50),        --表名

 @Fields varchar(5000) = '*',    --字段名(全部字段为*)

 @OrderField varchar(5000),        --排序字段(必须!支持多字段)

 @sqlWhere varchar(5000) = Null,--条件语句(不用加where)

 @pageSize int,                    --每页多少条记录

 @pageIndex int = 1 ,            --指定当前为第几页

 @totalRecord bigint = 0,

@TotalPage int output            --返回总页数

AS

BEGIN


Begin Tran --开始事务

 

Declare @sql nvarchar(4000);


if @totalRecord<=0 begin

--计算总记录数

 

if (@SqlWhere='' or @sqlWhere=NULL)

set @sql = 'select @totalRecord = count(*) from ' + @TableName

else

set @sql = 'select @totalRecord = count(*) from ' + @TableName + ' with(nolock) where ' + @sqlWhere


EXEC sp_executesql @sql,N'@totalRecord int OUTPUT',@totalRecord OUTPUT--计算总记录数      

    end


--计算总页数

    select @TotalPage=CEILING((@totalRecord+0.0)/@PageSize)


if (@SqlWhere='' or @sqlWhere=NULL)

set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') as rowId,' + @Fields + ' from ' + @TableName

else

set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') as rowId,' + @Fields + ' from ' + @TableName + ' with(nolock) where ' + @SqlWhere

 

--处理页数超出范围情况

    if @PageIndex<=0

Set @pageIndex = 1


if @pageIndex>@TotalPage

Set @pageIndex = @TotalPage


--处理开始点和结束点

    Declare @StartRecord int

Declare @EndRecord int


set @StartRecord = (@pageIndex-1)*@PageSize + 1

set @EndRecord = @StartRecord + @pageSize - 1


--继续合成sql语句

    set @Sql = @Sql + ') as t where rowId between ' + Convert(varchar(50),@StartRecord) + ' and ' +  Convert(varchar(50),@EndRecord)

print @sql

Exec(@Sql)

---------------------------------------------------

    If @@Error <> 0

Begin

RollBack Tran

Return -1

End

Else

Begin

Commit Tran

Return @totalRecord ---返回记录总数

      End

END